Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

Mobrey MLT100

Displacer Level Transmitter

• Level, contents or interface measurement transmitter

• Direct or external chamber mounting

• Two-wire 24 Vdc loop-powered

• 4–20 mA HART

®

output

• ATEX Intrinsically safe and explosion-proof certified versions

Contents

The Mobrey MLT100 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

Mobrey MLT100 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7

Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8 www.mobrey.com

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Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

Reliable Performance...In Challenging Applications

THE MOBREY MLT100 TRANSMITTER

The Mobrey MLT100 Level Transmitter is one of the most advanced displacer based devices on the market, coupling the time proven buoyancy principle with state of the art electronics in an instrument of high reliability and stability.

Special care has been taken in design to ensure a small mounting envelope is maintained, resulting in reduced weight and associated savings in mounting.

The displacer element is made to length for each order, and is suspended below the head on a stable spring arrangement which is designed to minimise friction effects and improve performance.

The transmitter can be mounted directly into a vessel or may be externally mounted in a chamber to allow isolation for planned maintenance or in-situ calibration checks.

Mobrey MLT100 Transmitter

With Optional Display Fitted

OPERATION

The 4

–

20 mA output from the head is proportional to the level or contents in the vessel, or may be set to follow an interface. The transmitter supports the HART protocol, which is superimposed on the 4

–

20 mA signal.

Changes of liquid level in the vessel cause the displacer element, which is supported on a spring, to rise or fall. A core, located in the pressure tube of the head, is connected to the displacer and moves linearly up and down with the element. Around the outside of the pressure tube in the head is a Linear Variable Differential Transformer (LVDT), the output of which is proportional to the position of the core. The pressure tube is made of stainless steel and is welded to the union which connects the head to the process pressure and temperature.

The user can operate the transmitter without digital communications, or can take advantage of the many features of HART such as remote calibration, re-ranging, on-line diagnostics, and multidrop installations.

FEATURES

• Two-wire 24 Vdc loop-powered

• 4–20 mA output

• Unique ‘Caliplug’ for local configuration and calibration

• HART communications

• EExd or EExia certification

• Simple local or remote calibration

• Non-interactive Zero and Span

• High temperature remote electronics option (available to special order)

• Optional display for local indication of measurement

• Range of wetside materials

Mobrey MLT100 Transmitter in a Side-and-bottom Chamber

BENEFITS

• Low maintenance

• Simple installation

• Local or remote calibration

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

TYPICAL APPLICATIONS

• Knock-out pots

• Condensate drums

• Separators

• Flash vessels

• Storage vessels

• Receiver tanks

Operating wetside temperatures are –60 to 320 °C at pressures between full vacuum and 200 bar. Remote electronics models available to special order for high temperature and nuclear applications.

Most liquids can be measured, with wetted materials chosen to suit. The liquid SG range is from 0.5 to 1.5, and interfaces with as low an SG difference of 0.1 are also practical.

The displacer length is dictated by the operating range requested, and the diameter and weight are factory calculated to ensure the correct operating movement of the core in the head. The longest standard operating range is 3000 mm.

SPECIAL FEATURES

Health-check LED

Each transmitter is fitted with a visible LED which flashes once every 3 seconds to show the instrument is healthy and working.

Field Adjustments

The transmitter is set up by Mobrey Measurement to operate in the conditions advised at the time of order, and the displacer element dimensions are chosen to suit.

Local Calibration (Without a Field Communicator)

Fine-tune adjustments on-site may be made with the instrument in an empty vessel at 200 °C, which ensures correct readings at operating conditions.

Several adjustments can be made using the unique “Mobrey Magnetic Scroller” (MMS) and the “Caliplug”.

The MMS is a calibration tool with a magnetic tip, and is used on this and other Mobrey Measurement instruments to access and adjust certain operating parameters.

The MLT100 is fitted with a calibration plug (Caliplug) which contains docking ports for the MMS along with a heartbeat LED. The adjustments which may be made are setting the 4 mA and 20 mA points, and damping.

Remote Calibration (not necessary for standard 4–20 mA operation)

Ranging can be carried out remotely using a Field Communicator to establish digital communications and set the

4 and 20mA points electronically without the need for changing the liquid level. All the remaining operating, diagnostic, and Process Value (PV) data is also available using a Field Communicator.

Local Indication Display (Optional)

The optional multi-function LCD indicator is housed in a cast aluminum Exd enclosure, and finished in a two-pack epoxy white paint. The 2-line LCD display can be programmed to show the output in percent (%), engineering units, and other operating parameters by using a Field Communicator.

3

4

Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

Additional Information

Specifications: page 6

Dimensions: page 7

The following information must be supplied at time of order:

• Operating pressure, temperature, specific gravities (upper and lower), and viscosity

• Liquid and nature of vapour (condensing or non-condensing)

• Maximum or design pressures and temperatures

• Ambient temperature and local environmental conditions

• Operating range (taken as the process connection centres unless otherwise stated)

• Mounting arrangement and specific construction materials required.

(If a chamber is required, please specify all relevant dimensions. Non-standard configurations may be made to special order)

• Any options: Display, chamber connections or vent/drain, special paint, inspection and NDT requirements, or other

Table 1. Mobrey MLT100 Ordering Information

Model Product Description

LT Mobrey level transmitter

Flange Material

69

71

72

73

65

66

67

68

76

77

78

00

60

61

62

63

64

Enclosure

C

S

N

Carbon steel

Stainless steel

No flange (1-in. NPT connection)

Flange Mounting

3-in. ASME B16.5 Class 150 Raised Face (RF)

3-in. ASME B16.5 Class 300 Raised Face (RF)

3-in. ASME B16.5 Class 600 Raised Face (RF)

3-in. ASME B16.5 Class 900 Raised Face (RF)

3-in. ASME B16.5 Class 1500 Ring Type Joint (RTJ)

4-in. ASME B16.5 Class 150 Raised Face (RF)

4-in. ASME B16.5 Class 300 Raised Face (RF)

4-in. ASME B16.5 Class 600 Raised Face (RF)

4-in. ASME B16.5 Class 900 Raised Face (RF)

4-in. ASME B16.5 Class 1500 Ring Type Joint (RTJ)

DN80 PN16

DN80 PN25

DN80 PN40

DN100 PN16

DN100 PN25

DN100 PN40

No flange (1-in. NPT connection)

TS

TF

TR

IP66 enclosure certified EExia for Intrinsic Safety (IS) use, Cast Iron, white epoxy painted.

IP66 Flameproof enclosure certified EExd for hazardous area use, Cast Iron, white epoxy painted

IP66 enclosure certified EExd with electronics in a remote IP66 aluminium enclosure.

Note: Remote electronics must be in the non-hazardous area.

TX IP66 enclosure certified EExia for Intrinsic Safety (IS) use, 316 stainless steel.

Pressure Tube Type – Select Type A or B using Figure 1 on page 6

A

B

Display

D

N

Standard (up to 224 °C condensing)

High temperature (224 °C to 277 °C condensing; 320 °C non-condensing, remote electronics to 320 °C condensing)

Display

No display

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

Table 1. Mobrey MLT100 Ordering Information

Spring

*

Displacer

The code for the spring will be selected by Mobrey at time of ordering or a quotation is given

* The code for the displacer will be selected by Mobrey at time of ordering or a quotation is given

Chamber Type and Orientation

A No chamber

B

C

D

F

J

K

G

H

L

M

N

P

Q

Side/bottom, no vent

Side/bottom,

1

/ 2 -in. NPT vent

Side/bottom,

3

/ 4 -in, NPT vent

Side/bottom,

3

/ 4 -in, flanged vent

Side/side, no vent,

1

/ 2 -in. NPT drain

Side/side, no vent,

3

/ 4 -in. NPT drain

Side/side, no vent, 1-in. NPT drain

Side/side,

1

/ 2 -in. NPT drain and vent

Side/side,

3

/ 4 -in NPT drain and vent

Side/side, 1-in. NPT drain and vent

Side/side, no vent,

3

/ 4 -in. drain

Side/side,

3

/ 4 -in. NPT vent,

3

/ 4 -in. flanged drain

Side/side,

3

/ 4 -in. flanged drain and vent

Chamber Process Connections

23

24

28

25

16

17

21

22

13

14

18

15

01

00

11

12

Screwed 1-in. NPT

No Chamber

1-in. ASME B16.5 Class 150 Raised Face (RF) flange

1-in. ASME B16.5 Class 300 Raised Face (RF) flange

1-in. ASME B16.5 Class 600 Raised Face (RF) flange

1-in. ASME B16.5 Class 900 Raised Face (RF) flange

1-in. ASME B16.5 Class 1500 Ring Type Joint (RTJ) flange

DN25 PN16

DN25 PN25

DN25 PN40

1

1

/ 2 -in. ASME B16.5 Class 150 Raised Face (RF) flange

1

1

/ 2 -in. ASME B16.5 Class 300 Raised Face (RF) flange

1

1

/ 2 -in. ASME B16.5 Class 600 Raised Face (RF) flange

1

1

/ 2 -in. ASME B16.5 Class 900 Raised Face (RF) flange

1

1

/ 2 -in. ASME B16.5 Class 1500 Ring Type Joint (RTJ) flange

DN40 PN16

33

34

38

35

26

27

31

32

DN40 PN25

DN40 PN40

2-in. ASME B16.5 Class 150 Raised Face (RF) flange

2-in. ASME B16.5 Class 300 Raised Face (RF) flange

2-in. ASME B16.5 Class 600 Raised Face (RF) flange

2-in. ASME B16.5 Class 900 Raised Face (RF) flange

2-in. ASME B16.5 Class 150 Raised Face (RF) flange

DN50 PN16

36

37

DN50 PN25

DN50 PN40

Typical Model Number: LT C 61 TS A D * * B 11

5

Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

6

Specifications

Output

Range

Maximum Operating Pressure

Minimum Operating Pressure

Specific Gravity Range

Maximum Operating Temperature

Minimum Operating Temperature

Ambient temperature

Accuracy

Repeatability

Linearity

Resolution

Hysteresis

Power Supply

Turndown

Power consumption

Mobrey MLT100 Transmitter Specification

4–20 mA / HART digital

11.8 to 118 in. / 300 to 3000 mm (to order)

2900 psi (200 bar)

Full vacuum

Standard: 0.5 to 1.5

Interface: 0.1 difference

530 °C (277 °C) condensing, 608 °F (320 °C) non-condensing

608 °F (320 °C) condensing with remote electronics

–76 °F (–60 °C)

–40 to 176 °F / –40 to 80 °C (subject to process temperature)

< ±1% of output span

±0.2% of output span

0.2% of output span

0.1% of output span

0.3% of output span

12 to 40 Vdc loop-powered

3:1

21 mA / 40 V: 840 mW maximum

Pressure Tube Types A and B

Figure 1. Graphs for selecting a Pressure Tube Type

Pressure Tube Type (Condensing Liquids)

380

320

260

200

140

80

20

20

277

224

Contact Mobrey Measurement

High Temperature (Type B)

Standard Temperature (Type A)

40 60

Ambient °C

80

80

380

320

260

200

140

80

20

20

20

Pressure Tube Type (Non-condensing Liquids)

Standard Temperature (Type A)

40

55

Ambient °C

High Temperature

(Type B)

60 80

80

Materials of Construction

The transmitter head is manufactured from cast iron with a paint finish of two-pack Epoxy white paint suitable for offshore or coastal use. It is weatherproof to IP66 / IP67 ratings.

Wetted parts are made from stainless steel, including the element, trim, and pressure tube, except for the spring which is manufactured from a specialist corrosion resistant spring material, NIMONIC, chosen for it’s stability and repeatability under changing process conditions.

Optional Chamber

The material used is either as specified on the order or selected by Mobrey Measurement to suit the application. Only certified materials are used, and welding is qualified to ASME IX, BS EN 287, and EN ISO 15614-1. All pressure retaining parts are hydrostatically pressure tested to a minimum of 1.5 times working pressures. NDT including radiography and dye penetrant testing is available when specified at time of ordering. Inspection by customers or their appointed agents is welcome provided that this is requested at time of ordering.

Options:

• Wetside materials in Alloy C276 (UNS N10276), Alloy 625 (UNS N06625), and others on request

• Compliance with NACE MR-01-75 for sour service duty

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

Dimensions

Figure 2. MLT100 with Optional Display

Note: Dimensions are in mm.

Main Housing

With Cover

Removed

1-in. NPT Cable Entry

Caliplug Fitted Here

When No Display Caliplug

-

SCN

LED1

LED2

Optional Display

360

Ø180

Cover

LDVT Coil/Core

Assembly

H

Main Housing

1-in. NPT

Process Connection

Linkage to Actuating Displacer

Table 2. Head Height Dimension H

Head Height H

Pressure Tube A 200 mm

Pressure Tube B 422 mm

Allow an extra 90 mm for cover removal.

7

8

Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

Approved Manufacturing Locations

Mobrey Limited, Slough, United Kingdom

European Directive Information

The EC declaration of conformity for all applicable European directives for this product can be found on the Mobrey website at www.Mobrey.com. A hard copy may be obtained by contacting your local sales office.

ATEX Directive (94/9/EC)

The MLT100 complies with the ATEX directive.

Pressure Equipment Directive (PED) (97/23/EC)

The MLT100 complies with the PED directive.

Electro Magnetic Compatibility (EMC) Directive

EN 61326-1:2006, EN 61326-2.3:2006

Hazardous Locations Certifications

ATEX Intrinsically Safe Approvals

(Enclosure code TS only)

Certificate Number: Sira 03ATEX2153X

ATEX Intrinsically Safe

II 1 G

II 1 D (T90 °C)

EEx ia IIC T5 (T a

= –40 to 40 °C)

EEx ia IIC T4 (T a

= –40 to 80 °C)

Input Parameters

U i

= 28 Vdc, l i

= 93 mA, P i

= 0.66 W, C i

= 48 nF, L i

= 0.22 mH

Output Parameters (at the programming/calibration connector)

U o

= 18 Vdc, l o

= 93 mA, P o

= 0.44 W, C o

= 0.309

F, L o

= 4.2 mH

(Enclosure code TX only)

Certificate Number: Sira 04ATEX2206X

ATEX Intrinsically Safe

II 1 G

EEx ia IIC T5 (T a

= –40 to 40 °C)

EEx ia IIC T4 (T a

= –40 to 80 °C)

Input Parameters

U i

= 28 Vdc, l i

= 93 mA, P i

= 0.66 W, C i

= 48 nF, L i

= 0.22 mH

Output Parameters (at the programming/calibration connector)

U o

= 18 Vdc, l o

= 93 mA, P o

= 0.44 W, C o

= 0.309

F, L o

= 4.2 mH

ATEX EEx ia Special Conditions For Safe Use:

1. The enclosure may be manufactured from alloys containing light metals. In rare cases, ignition sources due to impact and friction sparks could occur. This shall be considered when the equipment is installed in locations that specifically require group II, category 1G equipment.

Product Certifications

ATEX Flameproof Approval

(Enclosure codes TF and TR only)

Certificate Number: Sira 03ATEX1190X

ATEX Flameproof

II 1/2 G

II 1/2 D (T85 °C)

EEx d IIC T6 (T a

= –40 to 75°C)

ATEX EEx d Special Conditions For Safe Use:

1. The enclosure must not be opened when a flammable atmosphere is present, even when the equipment has been electrically isolated.

2. The partition wall may not be stainless steel (see page 6), therefore the MLT100 shall not be subjected to environmental stresses that might adversely affect the partition wall.

3. The float or mounting flange may be a non-metallic material.

The user must ensure suitability for the application and not ignition capable due to electrostatic charging. Do not rub with a dry cloth.

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

9

Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

10

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey MLT100 Transmitter

11

Mobrey MLT100 Transmitter

Product Data Sheet

IP119, Rev BA

March 2012

Mobrey Level Solutions

Emerson provides a wide range of Mobrey products for level measurement applications.

POINT LEVEL DETECTION

Vibrating Fork Liquid Level Switches

For high and low alarms, overfill protection, pump control, including wide pressure and temperature requirements, and hygienic applications. Flexible mounting. Immune to changing process conditions and suitable for most liquids.

• Mobrey Mini-Squing (Compact)

• Mobrey Squing 2 (Full-featured)

Ultrasonic Gap Sensor Liquid Level Switches

For use in non-hazardous industrial processes to detect high or low liquid levels and liquid interface. Immune to changing density, and wide dielectric and pH variations. Suitable for use in most clean and non-aerated liquids, with options for sludges and slurries.

Float and Displacer Liquid Level Switches

Mobrey electromechanical float and displacer level switches are ideal for alarm and pump control duties, especially in critical applications or hazardous areas.

• Mobrey Horizontal Level Switches

• Mobrey Vertical Level Switches

Chambers are available for external mounting of these level switches on process vessels.

Dry Products Level Switches

For high and low level alarms. Including threaded mounting connections, extended lengths, high temperature capability, and multiple detection techniques. Suitable for a wide variety of powders, granules, and free flowing solids with wide variations in bulk densities.

• Mobrey VLS Series – Vibrating Rod Level Switch

• Mobrey PLS Series – Paddle Level Switch

• Mobrey CLS Series – Capacitance Level Switch

CONTINUOUS MEASUREMENT

Ultrasonic Continuous Level Transmitters and Controllers

Top mounted, non-contacting for simple tank and open-air process level measurements. Unaffected by fluid properties such as density, viscosity, dirty coating, and corrosiveness. Intrinsically

Safe versions are available for operating in hazardous areas.

• Mobrey MSP Series Ultrasonic Level and Flow Transmitters

• Mobrey MCU900 Series Universal Controllers

Ultrasonic Sludge Density Blanket Monitoring and Control

Ultrasonic in-line pipe or tank mounted sensors for sludge density measurement and control, and top mounted ultrasonic sensors for continuous measurement of sludge blanket level in Industrial and

Municipal effluent treatment processes.

• Mobrey MSM400 – Sludge Density Monitor

• Mobrey MSL600 – Sludge Blanket Level Monitor

Displacer Continuous Level Measurement

Top mounted in a vessel or externally mounted in a vertical chamber. For use in hazardous areas.

• Mobrey MLT100 – Displacer Level Transmitter

Hydrostatic Continuous Level Transmitter

For level measurements in non-pressurized tanks where in-tank problems such as foaming, vapor layers, and temperature gradients prohibit the use of other instrumentation.

• Mobrey 9700 Series hydrostatic electronic level transmitters

SPECIALIZED CONDUCTIVITY

Conductivity Water and Steam Interface Monitoring

Steam/water interface level gauges using specialized, high performance conductivity probes in external columns and manifolds, ideal for steam plants where reliable and redundant indication of boiler water level and turbine protection is critical.

• Hydratect 2462 – Water/Steam detection Systems

• Hydrastep 2468 – Water/Steam Monitoring Systems

The Emerson logo is a trademark and service mark of Emerson Electric Co.

Mobrey is a registered trademark of Mobrey Ltd.

Rosemount is a registered trademark of Rosemount Inc.

All other marks are the property of their respective owners.

Standard Terms and Conditions of Sale can be found at www.rosemount.com\terms_of_sale

© 2012 Mobrey Ltd. All rights reserved.

Emerson Process Management

Mobrey Measurement

158 Edinburgh Avenue

Slough, Berks, SL1 4UE, UK

Tel: +44 (0)1753 756600

Fax: +44 (0)1753 823589 www.mobrey.com

IP119 Rev BA 03/12